BGS mineralogy and petrology collection record

Sample number	E18632; COLLNOWW18;
Sample Donor	Woodland,A.W.
Rock name	Siltstone, Micaceous. 'Original entry: Sericitic Siltstone'
Stratigraphy	Not entered
Comments	Country rock containing Limonite-wad ore
Locality details	Old Trial Level, NW spur of Mynydd Mawr, Bettws, Garmon
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 534 554
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.